At Thursday night’s “Scarface” reunion at the Tribeca Film Festival, moderator Jesse Kornbluth drew the scorn of a packed Beacon Theater when he asked Michelle Pfeiffer what she weighed during the filming of the 1983 gangster classic.

“Michelle, as the father of a daughter, I’m concerned with body image. In the preparation for this film — what did you weigh?” he asked. Met with a cacophony of boos, Kornbluth tried to claim the question wasn’t “what you think it is.”

Although she looked taken aback by the question, Pfeiffer, 59, quickly gathered herself, saying, “Well, okay. I don’t know. I was playing a cocaine addict, so that was part of the physicality of the part, which you have to consider.”

“The movie was only supposed to be, what?” she continued. “A three- or four-month shoot? Of course, I tried to time it so that as the movie went on, I became thinner and thinner and more emaciated. The problem is, it ended up going six months.”

Michelle PfeifferEvan Agostini/Invision/AP

Informed by director Brian De Palma that the shoot had actually gone eight months, she admitted it had been a struggle.

“The one scene, the end of the film, where I was thinnest, it was always next week, then next week,” she explained. “I literally had members of the crew bringing me bagels because they were worried about how thin I was getting. I was living on tomato soup and Marlboros.”

Considering his willingness to go there with the actress, Kornbluth never asked the other panelists — Al Pacino, Steve Bauer and DePalma — what they weighed during the film’s production.

Reached by Page Six over Facebook, Kornbluth defended the question, writing, “It is true that a gentleman should never ask a woman about her weight. But that was not my question. It is a comment on the knee-jerk political correctness of our time that no one would be shocked if you asked Robert De Niro about the weight gain required for his role in ‘Raging Bull’ but you get booed — not by many, but by a vocal few — for asking Michelle Pfeiffer about the physical two-dimensionality required for her to play a cocaine freak in ‘Scarface.'”